Expand $$$3 c^{3}(c+4)$$$ (2) (b) (i) Factorise $$$x^{2}+8 x-9$$$ (2) (ii) Hence, solve $$$x^{2}+8 x-9=0$$$ (1)

Mathematics

IGCSE&ALevel

EDEXCEL

Exam No：4ma1-1hr-que-20220521 Year：2022 Question No：5

Answer:

2: Equations, formulae and identities

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